344. Reverse String，344reversestring

344. Reverse String，344reversestring

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

代碼如下：

方法一：(java)

1 public class Solution {2     public String reverseString(String s) {3 4         StringBuffer t=new StringBuffer(s);5         return t.reverse().toString();6     }7 }

 方法二：（c++）

1 class Solution {2 public:3     string reverseString(string s) {4         reverse(s.begin(),s.end());5         return s;6     }7 };